Addressing fields in ArcGIS field calculator dynamically?

Question

I am (re-)learning ArcGIS for a new job after couple of years on PostGIS (and QGIS/pyqgis) and can't figure out how I can address a Field within the pre-logic-block of the field calculator.

Pre-Logic-Field:

def createStyleField(kindofuse):
 if kindofuse == 'wa':
 listofrelevantfields= {
 1: ['level1', 'level1_wa'],
 2: ['level2', 'level2_wa']
 }
 elif kindofuse == 'ge':
 listofrelevantfields= {
 1: ['level1', 'level1_ge'],
 2: ['level2', 'level2_ge']
 }
 elif kindofuse == 'gi':
 listofrelevantfields= {
 1: ['level1', 'level1_gi'],
 2: ['level2', 'level2_gi']
 }
 results = {}
 for levelkuerzel, liste in listofrelevantfields.iteritems():
 for entry in liste:
 if '!' + entry + '!' == 1: ## THIS IS WHERE I AM TRYING TO ADDRESS A FIELD
 results[levelkuerzel] = True
 break
 else:
 continue
 for i in range(1, 5) : #up to 5 levels, the lowest will be returned
 try:
 if results[i] == True:
 return unicode(i)
 except KeyError as err:
 continue
 except Exception as err:
 raise err
 return 0

And the other Field:

createStyleField('wa')

I need this for a couple of more complex calculations with a big number and case-dependent selection of fields. How do I do this?

Or should I address this issue totally different?

Answer 1

I found a solution for this case by not addressing a field dynamically, but there are other cases where dynamically choosing of field come in handy...

Especially because it will be used later in an arcpy-script.

Pre-Logic:

def createStyleField(listofrelevantfields):
## listofrelevantfields = {}
## if kindofuse == 'wa':
## listofrelevantfields= {
## 1: ['level1', 'level1_wa'],
## 2: ['level2', 'level2_wa']
## }
## elif kindofuse == 'ge':
## listofrelevantfields= {
## 1: ['level1', 'level1_ge'],
## 2: ['level2', 'level2_ge']
## }
## elif kindofuse == 'gi':
## listofrelevantfields= {
## 1: ['level1', 'level1_gi'],
## 2: ['level2', 'level2_gi']
## }
 results = {}
 for levelkuerzel, liste in listofrelevantfields.iteritems():
 for entry in liste:
## if '!' + entry + '!' == 1:
 if entry == 1:
 results[levelkuerzel] = True
 break
 else:
 continue
 for i in range(1, 5) :
 try:
 if results[i] == True:
 return unicode(i)
 except KeyError as err:
 pass
 except Exception as err:
 raise err
 return 0

Calling it:

createStyleField({1: [!level1!, !level1_wa!], 2: [!level2!, !level2_wa!]})